Electric rack-locomotive



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l DAVID L. BARNES, OF CHICAGO, ILLINOIS.

ELECTRIC RACK-LOCOMOTIVE.

I SPECIFICATION forming part of Letters Patent No. 564,861, dated July 2s, 189e.

Application led March 19, 1896.

To l/Z whom/ t may coltcernf Be it known that I, DAVID L. BARNES, a citi'- Zen of the United States, and a resident of Chicago, Illinois, have invented certain Improvements in Electric Rack-Locomotives, of which the following is a specification.

The object of my invention is to construct an electric rack-locomotive in which the motors are supported partly by thev axles and partly by the frame.

In the accompanying drawings, Figure l is a longitudinal sectional view of my improved are carriers c2 for the springs c3, which sup port the frames A, Fig. l. A

D are electric motors of any suitable construction, and on each motor are frames D', having boxes CZ and d'. The boxes d are adapted to the'axles B, while an intermediate shaft E is adapted to the boxes cl.

On the motor-shaft cl2 is a pinion e, meshing with the gear-wheel e on vthe intermediate shaft'E, and on this intermediate shaft E is a gear-wheel E', which meshes with the gearwheel F on t-he axle B. The gear-Wheel F is adapted to mesh with arack f, Fig. 3, mounted between the rails of the track. Y

It will be noticed that the wheels E and F are double wheels. One half, e2, of the wheel E has teeth which are opposite the spaces in the other half, e3, of the wheel. The same construction is carried out on the wheel F. The teeth of the half f are opposite the spaces of the half f 2. This form of gear-wheel is common in rack-locomotives.

Ihave shown in the drawings two bearingframes D' for each motor, but a single frame may be used without departing from my invention.

On that side of each motor D opposite to Serial No. 583,937. (No model.)

the side carrying the bearing-frame is a lug (Z3, which rests upon a bracket a on, the cross bar A of the frame A. Thus the motor is partly supported by the frame and partly by the axle B. The motor rests loosely upon the bracket ct', so that it will accommodate itself t'o the axle.

In the drawings, Figs. l and 2, I have shown the locomotive having two independent motors, each motor geared to an axle,.one motor being a duplicate of the other, so that each axle is driven by its own motor.

In some instances a single motor may be used, either on a single driving-shaft, or the driving-wheels may be coupled in the ordinary manner by connecting-rods,

One or both of the intermediate shafts E maybe provided with friction-drums t or other brake mechanism.

More than two motors may be used and more than two axles, and the axles may be coupled together when the motors are independently arranged without departing from my invention, the essential feature of my invention being the arrangement of the parts so that the rack-gear can be driven by an electric motor.

The controller-box G is made in any suitable Inanner. The controller-wheel `g is mounted on the shaft g, which is coupled to the mechanism in the box, this shaft being supported in any appropriate man ner and arranged Within easy access of the operator.

I claim as my invention-- 1. The combination in a rack-locomotive, of the rack-wheel and its axle, a motor having a frame supported by said axle and also hav-v ing a bearing on the frame of the locomotive and gearing between the armature-shaft of the motor and the axle, one of the elements of said gearing being the rack-shaft, substantially as described.

2. The combination in amok-locomotive, of the main frame, the driving-axle, a gearwheel mounted on the axleand adapted to engage a rack, a motor, a bearing-frame secured to or forming part of the motor and having journal-boxes adapted to the axle, an intermediate shaft and a motor-shaft, the said intermediate shaft being supported by the said frame and having gear-wheels, one. meshing with the gear-wheel on the axle and the IOO vIo

other meshing with the pinion on the motorshaft, the motor resting loosely on the frame, substantially as described.

3. The combination in an electric rack-lo com'otive, of the main frame, the driving-axle, journal-boxes mounted in the pedestals of the frame, springs interposed between the frame and the aXle, a motor having a lug loosely resting on the frame, bearing-:frame secured to or forming part of the motor and resting upon the axle, an intermediate shaft journaled in bearings on the said frame, a gear- Wheel on the axle adapted to mesh with a 

